Rigid Foam Insulation Thickness

As a foil faced polyisocyanurate foam insulation enerfoil tm s r value actually more than doubles.

Rigid foam insulation thickness. Used in this way the foam lowers the loss of energy through framing members a phenomenon called thermal bridging and increases the overall r value of the roof or wall assembly. Thicker sheets up to 6 in. If you are looking for a substitute for rigid foam insulation that isn t made of plastic or petroleum you might want to consider using cork. So you need to know an insulation product s thickness as well as its r value in order to compare it to another product.

It is often used as a layer of continuous insulation on exterior walls and in the roof. Rigid foam sheets are sold in several thicknesses. Eight inches of poor quality insulation may have a higher and better r value than one inch of top quality insulation. Rigid foam insulation packs a lot of r value into a relatively thin package.

Excelsis design pack of 15 foam boards acid free 16x20 inches many sizes available 3 16 inch thick mat white with white core foam core backing boards double sided sheets 4 5 out of 5 stars 671. This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses. Rmax r matte plus 3 1 2 in. For a 1 in thick 4 8 panel comes unfaced or with a number of different plastic facings.

Extruded polystyrene xps rigid foam insulation owens corning foamular 250 extruded polystyrene xps rigid foam insulation is a closed cell highly moisture resistant rigid foam board well suited to meet the needs for a wide variety of residential and commercial construction applications. This foam board insulation is available with straight or tongue and groove edges to help limit air movement. Falls in the middle of the three types of rigid foam insulation in both cost and r value used most in walls or below grade applications recyclable and at about r 5 per inch costs around 42 per sq. Most lumberyards carry insulation ranging from 1 2 in.

R 3 2 polyisocyanurate rigid foam insulation board r matte plus 3 thermasheath 3 is rigid foam r matte plus 3 thermasheath 3 is rigid foam plastic thermal insulation board. Amazon s choice for rigid foam. It is denser than eps and provides more r value with a rating of 5 per inch of thickness.